1. a male inserting his testicles into a vagina, anus, or other orifice commonly used for sexual stimulation

2. similar to tit-fucking, wrapping the testicles around the shaft of your partner's penis, or your own, and simulating sex.
My genital herpes were acting up last night, so my girl and I had ball sex instead.
by HankMoody( *)(* ) February 12, 2012
It's like penisex except tighter.
You wanna have some penisex?

Nah I'm in the mood for something tighter. How bout ballsex?

I'm in!
by Thatballsexguy August 29, 2009

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